Drum transponder



FIG. 1 is a perspective view of the design of this invention;

FIG. 2 is a first side view;

FIG. 3 is a second side view;

FIG. 4 is a top view; and,

FIG. 5 is a bottom view.

In the drawings, the broken lines showing an electrical cable illustrate environment and form no part of the claimed design. 

CLAIM The ornamental design for a drum transponder, as shown and described. 